Silanes containing imide groups

Abstract

The compounds according to the invention have the formula I ##STR1## in which R 1 , R 2 and R 3 are monovalent organic radicals or chlorine and Z is a tetravalent organic radical and A is a divalent organic grouping. These products are to be used as adhesion promoters, especially between inorganic solids and organic resins. 4 processes of preparation are given.

What is claimed is: 
     
       1. A compound of the formula I ##STR75## wherein R 1  and R 2  independently of one another are methyl, ethyl, phenyl, vinyl, chlorine or a group --OR, R 3  is chlorine or --OR, R is alkyl having 1-10 C atoms, cycloalkyl having 5-8 C atoms or phenyl; A is one of the divalent radicals --(CH 2 ) a  --, --C(R 10 ) 2  --CH(R 11 )--, --(CH 2 ) b  --G--(CH 2 ) c  --, phenylene--(CH 2 )hd d--G--(CH 2 ) c  -- or phenylene-(CH 2 ) d  ;   G is --CH(R")-- or phenylene;   R 10  is hydrogen, methyl or ethyl, R 11  is hydrogen or alkyl having 1 to 10 C atoms;   a is a number from 1 to 10, b is a number from 1 to 6, c is a number from 1 to 6 and d is a number from 0 to 6;   in these divalent radicals A the bond to the Si atom is in each case effected via the bond on the right-hand side,   Z is one of the groupings ##STR76## R 4 , R 5 , R 6  and R 7  independently of one another are hydrogen, methyl, phenyl, --CN or halogen, R 8  and R 9  independently of one another are alkylene having 3 or 4 C atoms, oxaalkylene having 3 or 4 C atoms or are one of the radicals ##STR77## X is --CH 2  -- or --O--.   
     
     
       2. A compound according to claim 1 wherein Z is ##STR78## 
     
     
       3. The compound according to claim 1 which is ##STR79## 
     
     
       4. A compound according to claim 1, in which, in formula I, Z is the grouping ##STR80## in which R 8  and R 9  are each ##STR81## 
     
     
       5. A compound according to claim 1, in which, in formula I, R 1  is methyl, R 2  and R 3  independently of one another are alkoxy having 1-3 C atoms, cyclohexyloxy or phenoxy, R 4 , R 5 , R 6  and R 7  independently of one another are hydrogen or methyl, R 8  and R 9  are each tetramethylene, R 10  is hydrogen or methyl, R 11  is hydrogen, a is a number from 1 to 6, b and c independently of one another are 2 or 3 and d is a number from 0 to 3. 
     
     
       6. A compound according to claim 1 which has the formula II ##STR82## in which a' is 2 or 3 and R 4 , R 5 , R 6  and R 7  are each hydrogen or are each methyl.